head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Execution · Practiced Mastery
Chaotic vehicular destruction testing driving control and map knowledge.

Execution · Practiced Mastery
An isometric combat racer set to metal covers, mixing vehicle upgrades with weaponized laps.
Carmageddon: Max Damage leans Execution (Practiced Mastery); Rock n' Roll Racing leans Execution (Practiced Mastery).
Rock n' Roll Racing leans a little harder on execution, though the gap is small.
Carmageddon: Max Damage
Vehicular mayhem rewards precise ramming and recovery driving
Rock n' Roll Racing
Isometric cornering and weapon timing carry races.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Carmageddon: Max Damage
AI rivals follow routines, not your mind
Rock n' Roll Racing
Two-player duels add slight prediction; AI is scripted.
Carmageddon: Max Damage leans a little harder on variance, though the gap is small.
Carmageddon: Max Damage
Physics chaos and pickup spawns scramble outcomes
Rock n' Roll Racing
Weapon exchanges and pickups create chaos.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Carmageddon: Max Damage
Knowing maps, shortcuts and wreck-economy wins events
Rock n' Roll Racing
Upgrade purchases and planet-by-planet earnings are plannable.
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.